Proves consistency of boldface Σ¹₁-separation on ω₁^ω₁ via forcing from L that preserves CH.
A very absoluteΠ1 2-real singleton.Annals of Mathematical Logic, 23:101– 120, 1982
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Forcing $\mathbf{\Sigma}^1_1$-Separation on $\omega_1^{\omega_1}$
Proves consistency of boldface Σ¹₁-separation on ω₁^ω₁ via forcing from L that preserves CH.